Prosecutors in Silicon Valley say authorities have arrested 18 people and seized methamphetamine, cocaine and drug labs as part of an investigation into a major drug distribution ring with ties to a Mexican cartel.

Two people, including a man with alleged ties to Mexican drug cartels, were arrested March 27 after detectives seized 37 pounds of methamphetamine from their vehicle, according to the Santa Clara County Sheriff’s Office.

Nadia Lockyer, 42, is a former Alameda County supervisor and president of the Santa Ana school board. She resigned the supervisor’s post in April 2012 following a string of bizarre public incidents that she blamed on chemical dependency.

Federal agents at Mineta San Jose International Airport arrested a teenage boy from Mexico on New Year’s Eve after he allegedly brought a half-million dollars’ worth of methamphetamine in his luggage, authorities said Wednesday.